Squeezing Crystals Reveals New Path to Manipulate Magnetic Properties

Scientists at Oak Ridge National Laboratory found that applying mechanical pressure to altermagnets can alter their magnetic structure and electrical behavior without modifying their chemical composition. This discovery reveals a new mechanism for controlling magnetism through physical deformation, opening doors for energy-efficient electronic devices. The effect was confirmed using neutron experiments on crystalline materials.

Scientists at Oak Ridge National Laboratory have discovered that applying mechanical pressure to altermagnets can modify their magnetic structure and electrical properties without changing their chemical makeup. This breakthrough demonstrates a new physical mechanism for controlling magnetism through deformation, offering a potentially energy-efficient alternative to traditional electronic manipulation methods. The findings were confirmed using neutron experiments on crystalline materials, providing direct evidence of how strain alters the material’s internal magnetic order. While specific details such as pressure levels, crystal types, or exact changes in electrical behavior are not provided, the method stands out for its ability to influence magnetism without altering composition—unlike conventional approaches that rely on doping or external fields.

The discovery builds on prior research into multiferroic and spintronic materials, where scientists have long sought ways to control magnetic states with minimal energy input. Altermagnets, a relatively recent class of materials characterized by alternating magnetic moments, have attracted interest due to their unique electronic properties. The Oak Ridge team’s work advances this field by showing that mechanical strain—rather than chemical or thermal means—can be used to tune these properties. This could lead to new designs for low-power memory devices, sensors, and logic circuits. The laboratory’s use of neutron scattering und